CN110772954A - Flue gas desulfurization and denitrification treatment process - Google Patents
Flue gas desulfurization and denitrification treatment process Download PDFInfo
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- CN110772954A CN110772954A CN201911250396.4A CN201911250396A CN110772954A CN 110772954 A CN110772954 A CN 110772954A CN 201911250396 A CN201911250396 A CN 201911250396A CN 110772954 A CN110772954 A CN 110772954A
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- flue gas
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- limiting shaft
- purification tower
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 239000003546 flue gas Substances 0.000 title claims abstract description 152
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 26
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000000746 purification Methods 0.000 claims abstract description 42
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 13
- 230000002745 absorbent Effects 0.000 claims description 28
- 239000002250 absorbent Substances 0.000 claims description 28
- 239000002585 base Substances 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010992 reflux Methods 0.000 abstract description 2
- 239000002341 toxic gas Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 4
- 238000003915 air pollution Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a flue gas desulfurization and denitration treatment process, which is characterized in that a tower base, a flue device, a purification tower and a storage device are matched to complete flue gas desulfurization and denitration treatment; the invention solves the problem that the internal smoke circulation distance of the smoke purification tower is limited when the existing smoke purification tower processes smoke; the circulation time of the flue gas in the flue gas purification tower is too short, the flue gas cannot be thoroughly purified through the purification tower, a large amount of toxic gas is discharged to the atmosphere, and the existing flue gas purification tower has gas reflux when the gas is discharged, so that the problem that the large amount of gas cannot be purified through the flue gas purification tower is solved.
Description
Technical Field
The invention relates to the technical field of flue gas desulfurization and denitration treatment, in particular to a flue gas desulfurization and denitration treatment process.
Background
The flue gas purification tower in the air purification equipment is mainly applied to a power plant taking coal and petroleum as raw materials, removes particles such as dust, sulfur, nitrate and the like in flue gas, enables the flue gas to reach the standard and improves the emission quality of the flue gas.
However, most of the traditional industrial flue gas treatment modes are that the flue gas is cooled by water in a purification tower and then directly discharged into the atmosphere, smoke dust, sulfur-containing compounds and nitrate-containing compounds in the flue gas cannot be effectively absorbed, the discharged flue gas and rainwater are combined to form acid rain, so that the growth of green plants is greatly damaged, and meanwhile, rivers are also seriously polluted.
At present, gas is purified by a flue gas purification tower, but when the existing flue gas purification tower is used for treating flue gas, the internal flue gas circulation distance of the flue gas purification tower is limited; the circulation time of the flue gas in the flue gas purification tower is too short, the flue gas cannot be thoroughly purified through the purification tower, a large amount of toxic gas is discharged to the atmosphere, and the existing flue gas purification tower possibly has gas reflux when the gas is discharged, so that a large amount of gas cannot be purified through the flue gas purification tower.
Therefore, in order to ensure the emission quality of the flue gas; the invention provides a flue gas desulfurization and denitrification treatment process.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme, namely a flue gas desulfurization and denitration treatment process, which comprises the following specific steps:
s1, mounting of a tower base: manually installing the tower base at the outlet of the upper vent hole of the boiler flue gas through bolts, nuts and the like, and sealing the joint by using a sealing washer, so that the flue gas is prevented from leaking outwards;
s2, flue path adjustment: the length of the flue path is adjusted according to the density of the flue gas, so that the flue gas is completely absorbed and treated, the gas is prevented from leaking, and the discharged gas is further ensured to meet the air discharge standard;
s3, installation of a purification tower: installing the purification tower on the tower base in a spiral connection mode, and arranging a sealing gasket at the connection position between the purification tower and the tower base;
s4, placing an absorbent: placing a mixture of alkaline liquid (lime, limestone, other alkali waste liquid) and the like in the storage device, and placing the storage device at the upper end of the purification tower;
s5, flue gas treatment: discharging flue gas in the boiler, and performing desulfurization and denitrification treatment through a purification tower; and periodically replacing the absorbent inside the storage device;
the flue gas desulfurization and denitration treatment process in the steps of the flue gas desulfurization and denitration treatment process S1-S5 needs to be completed by matching a tower seat, a flue device, a purification tower and a containing device; wherein:
the upper end of tower seat is installed the purifying column through bolt and nut, is provided with flue device through sliding fit in the inside cavity of purifying column, the inside storage device that is provided with of the upper end cavity of purifying column, just the inside admixtures such as alkaline liquid (lime, lime stone, other alkali lye waste liquids) that are provided with of storage device.
The flue device comprises a support frame, an outer limiting shaft lever, an inner limiting shaft lever, an auxiliary pin, a flue gas guide cover, a clamping spring, a flue gas dust removal card, an adjusting ring and a sealing plug; the lower end of the support frame is provided with an outer limiting shaft rod, the inner part of the outer limiting shaft rod is of a cavity structure, the outer wall of the outer limiting shaft rod is provided with symmetrical rectangular through grooves, the outer wall of the outer limiting shaft rod is uniformly provided with flue gas guide covers from top to bottom in a sliding fit mode, and adjacent flue gas guide covers are connected through a pin shaft; the side edge of the flue gas guide cover is arranged in a sliding groove of the tower body in a sliding fit manner; a flue gas dust removal card is arranged at the joint between the two flue gas guide hoods; an inner limiting shaft lever is arranged inside the outer limiting shaft lever, a clamping spring is sleeved on the outer wall of the inner limiting shaft lever between two adjacent smoke guide covers, a sealing plug is arranged at the bottom end of the outer limiting shaft lever, and an adjusting ring is arranged on the outer wall of the lower end of the outer limiting shaft lever in a spiral matching mode; the auxiliary pin is arranged at the lower end of the support frame in a sliding fit manner and is connected to the smoke guide cover at the uppermost end of the outer limiting shaft rod; an air inlet is formed in the outer wall of the smoke guide cover at the lowest end of the outer limiting shaft rod; according to the concentration of the discharged flue gas, the angle between the adjacent flue gas guide covers is further adjusted by operating the adjusting ring, so that the circulation time of the flue gas in the flue gas guide covers is controlled, and when the flue gas circulates in the flue gas guide covers, the dust particles in the flue gas guide covers are adsorbed and dedusted by the flue gas dedusting cards; the flue device who sets up can adjust the time of flue gas circulation, thereby changes flue gas circulation time through transform flue gas circulation angle, provides sufficient time further to carry out abundant dust suppression to the flue gas and handle.
The receiving device comprises a receiving box sleeve, an inner clamping ring, a lower grid, an upper grid, a fixed column, a fixed spring and a fixed ball ring; the bottom end of the containing box sleeve is uniformly provided with vent holes, the inner wall of the containing box sleeve is uniformly provided with balls in a movable connection mode, the inner clamping ring is arranged inside the containing box sleeve, and the lower end of the inner clamping ring is provided with a lower grid; the inner wall of the upper end of the inner clamping ring is provided with an annular sliding chute; the inner wall of the middle part of the inner clamping ring is uniformly provided with fixed columns, and the outer walls of the fixed columns are sleeved with fixed springs; the outer wall of the fixing column is provided with a fixing ball ring in a sliding fit manner; the upper grid is arranged in the inner clamping ring through a fixed ball ring; the mixture of the absorbent is placed in the containing box sleeve, and the containing box sleeve is covered with the upper grid and is fixed by the fixing ball ring; the storage box sleeve is arranged at the upper end of the tower body in a sliding fit mode, the flue gas is treated by the absorbent in the storage device, and meanwhile, the absorbent in the storage device needs to be replaced manually and periodically; the arranged containing device is convenient for replacing the absorbent in the device, and the pollution caused by the leakage of the treated absorbent is prevented; and the flue gas of inside circulation all need pass through inside absorbent at the in-process of emission through the storage device who sets up, has guaranteed the emission standard that accords with of the flue gas of emission.
The purification tower comprises a tower body, a limiting ring, a limiting plug, a cover sleeve, a support column, a rain cover and an auxiliary unit; the inner wall of the tower body is uniformly provided with sliding grooves, and the lower end of the tower body is provided with a limiting ring through a limiting plug; the side wall of the upper end of the tower body is provided with a mounting groove, the top end of the tower body is provided with a cover sleeve, the cover sleeve is of a round platform type cavity structure, the upper end of the cover sleeve is provided with a circular exhaust hole, the outer wall of the upper end of the cover sleeve is uniformly provided with support columns, the upper ends of the support columns are provided with rain shielding covers, and the auxiliary units are arranged in the middle of the tower body; the purifying column who sets up can be with inside gaseous whole drainage to the tower body to handle through the absorbent, guaranteed that gaseous whole is handled by effectual.
The auxiliary unit comprises an auxiliary frame, an auxiliary shaft and an exhaust fan; the lower end of the auxiliary frame is provided with an auxiliary shaft, and the auxiliary shaft is provided with an exhaust fan through a bearing; the exhaust fan is driven to rotate by airflow generated by rising of the flue gas, so that the circulation of the flue gas is further promoted, and the flue gas is treated by an absorbent, so that air pollution caused by flue gas backflow is prevented; the emission quality of the treated flue gas is ensured.
Preferably; the rain cover is provided with a skirt edge; the skirt edge is arranged on the rain shielding cover, so that external rainwater can be further prevented from flowing into the purifying tower.
Preferably; the fan blades of the exhaust fan are arranged for reverse exhaust; the fan blades of the exhaust fan are used for reversely exhausting air, so that the exhaust fan is driven by air flow generated when the internal flue gas rises to rotate, the internal flue gas is further promoted to pass through the absorbent in the containing device, and the flue gas can be prevented from flowing back; ensuring the flue gas to be absorbed thoroughly.
The invention has the beneficial effects that:
according to the invention, the angle between the adjacent flue gas guide covers is further adjusted by operating the adjusting ring according to the concentration of the discharged flue gas, so that the time of the flue gas flowing in the flue gas guide covers is controlled, and when the flue gas flows in the flue gas guide covers, dust particles in the flue gas guide covers are adsorbed and dedusted by the flue gas dedusting cards; the arranged flue device can adjust the time of flue gas circulation, change the flue gas circulation time by changing the flue gas circulation angle, and provide enough time for further carrying out sufficient dust removal treatment on the flue gas;
the storage device is convenient for replacing the absorbent inside, and the treated absorbent is prevented from leaking to cause pollution; the storage device is arranged, so that the circulating flue gas in the storage device needs to pass through the internal absorbent in the discharging process, and the discharged flue gas is ensured to meet the discharge standard;
the exhaust fan is driven to rotate by the airflow generated by the rising of the flue gas, so that the circulation of the flue gas is further promoted, and the flue gas is treated by the absorbent, so that the air pollution caused by the backflow of the flue gas is prevented; the emission quality of the treated flue gas is ensured.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic flow chart of a flue gas desulfurization and denitrification treatment process according to the invention;
FIG. 2 is a schematic front view of the tower base, the flue device, the purification tower and the storage device;
FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;
FIG. 4 is an enlarged view of a portion of the invention at B in FIG. 2;
FIG. 5 is an enlarged view of a portion of the invention at C of FIG. 2;
fig. 6 is a partial enlarged view of the invention at D in fig. 2.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining with the specific drawings, and it is to be noted that the embodiments and the features in the embodiments can be combined with each other in the application without conflict.
As shown in fig. 1 to 6, a flue gas desulfurization and denitration treatment process includes the following specific steps:
s1, mounting of the tower base 1: manually installing the tower base 1 at the outlet of the upper vent hole of the boiler flue gas through bolts, nuts and the like, and sealing the joint by using a sealing washer, so as to prevent the flue gas from leaking outwards;
s2, flue path adjustment: the length of the flue path is adjusted according to the density of the flue gas, so that the flue gas is completely absorbed and treated, the gas is prevented from leaking, and the discharged gas is further ensured to meet the air discharge standard;
s3, installation of the purification tower 3: installing a purification tower 3 on a tower base 1 in a spiral connection mode, and arranging a sealing gasket at the connection position between the purification tower 3 and the tower base 1;
s4, placing an absorbent: placing a mixture of alkaline liquid (lime, limestone, other alkali waste liquid) and the like in the storage device 4, and placing the storage device 4 at the upper end of the purification tower 3;
s5, flue gas treatment: discharging flue gas in the boiler, and performing desulfurization and denitrification treatment through a purification tower 3; and periodically replacing the absorbent inside the housing device 4;
the flue gas desulfurization and denitration treatment process in the steps of the flue gas desulfurization and denitration treatment process S1-S5 needs to be completed by matching the tower base 1, the flue device 2, the purification tower 3 and the storage device 4; wherein:
the upper end of tower seat 1 is passed through bolt and nut and is installed purifying column 3, is provided with flue device 2 through sliding fit in the inside cavity of purifying column 3, the inside storage device 4 that is provided with of the upper end cavity of purifying column 3, just inside admixtures such as alkaline liquid (lime, lime stone, other alkali lye waste liquids) of being provided with of storage device 4.
The purification tower 3 comprises a tower body 31, a limiting ring 32, a limiting plug 33, a cover sleeve 34, a support column 35, a rain cover 36 and an auxiliary unit 37; the inner wall of the tower body 31 is uniformly provided with sliding grooves, and the lower end of the tower body 31 is provided with a limit ring 32 through a limit plug 33; the side wall of the upper end of the tower body 31 is provided with a mounting groove, the top end of the tower body 31 is provided with a cover sleeve 34, the cover sleeve 34 is of a round platform type cavity structure, the upper end of the cover sleeve 34 is provided with a circular vent hole, the outer wall of the upper end of the cover sleeve 34 is uniformly provided with support columns 35, the upper ends of the support columns 35 are provided with rain shielding covers 36, and the rain shielding covers 36 are provided with skirt edges; the rain cover 36 is provided with a skirt to further prevent external rainwater from flowing into the purification tower 3; the auxiliary unit 37 is arranged in the middle of the tower body 31; the purifying column 3 that sets up can be with inside gaseous whole drainage to tower body 31 to handle through the absorbent, guaranteed that gaseous whole is handled by effectual.
The auxiliary unit 37 comprises an auxiliary frame 371, an auxiliary shaft 372 and an exhaust fan 373; an auxiliary shaft 372 is arranged at the lower end of the auxiliary frame 371, an exhaust fan 373 is arranged on the auxiliary shaft 372 through a bearing, and fan blades of the exhaust fan 373 are arranged in a reverse exhaust mode; the fan blades of the exhaust fan 373 are arranged for reverse exhaust, so that the exhaust fan 373 is driven by airflow generated when the internal flue gas rises to rotate, the internal flue gas is further promoted to pass through the absorbent in the storage device 4, and the flue gas can be prevented from flowing back; ensuring that the flue gas is thoroughly absorbed; the exhaust fan 373 is driven to rotate by the airflow generated by the rising of the flue gas, so that the circulation of the flue gas is further promoted, and the flue gas is treated by an absorbent, so that the air pollution caused by the backflow of the flue gas is prevented; the emission quality of the treated flue gas is ensured.
The receiving device 4 comprises a receiving box sleeve 41, an inner clamping ring 42, a lower grid 43, an upper grid 44, a fixed column 45, a fixed spring 46 and a fixed ball ring 47; the bottom end of the containing box sleeve 41 is uniformly provided with vent holes, the inner wall of the containing box sleeve 41 is uniformly provided with balls in a movable connection mode, the inner clamping ring 42 is arranged inside the containing box sleeve 41, and the lower end of the inner clamping ring 42 is provided with a lower grid 43; the inner wall of the upper end of the inner clamping ring 42 is provided with an annular sliding chute; the inner wall of the middle part of the inner clamping ring 42 is uniformly provided with a fixed column 45, and the outer wall of the fixed column 45 is sleeved with a fixed spring 46; the outer wall of the fixing column 45 is provided with a fixing ball ring 47 in a sliding fit manner; the upper grid 44 is arranged in the inner clamping ring 42 through a fixed ball ring 47; by placing the mixture of absorbents inside the containment casing 41, and covering the upper grid 44 and fixing it by the fixing ball 47; the containing box sleeve 41 is arranged at the upper end of the tower body 31 in a sliding fit mode, the flue gas is treated by the absorbent in the containing device 4, and meanwhile, the absorbent in the containing device needs to be replaced manually and periodically; the storage device 4 is convenient for replacing the absorbent inside, and the pollution caused by the leakage of the treated absorbent is prevented; and the flue gas of inside circulation all need pass through inside absorbent at the in-process of emission through storage device 4 that sets up, has guaranteed the emission standard that accords with of the flue gas of emission.
The flue device 2 comprises a support frame 21, an outer limiting shaft rod 22, an inner limiting shaft rod 23, an auxiliary pin 24, a flue gas guide cover 25, a clamping spring 26, a flue gas dust removal clamping piece 27, an adjusting ring 28 and a sealing plug 29; the lower end of the support frame 21 is provided with an outer limiting shaft lever 22, the inner part of the outer limiting shaft lever 22 is of a cavity structure, the outer wall of the outer limiting shaft lever 22 is provided with symmetrical rectangular through grooves, the outer wall of the outer limiting shaft lever 22 is uniformly provided with flue gas guide covers 25 from top to bottom in a sliding fit mode, and the adjacent flue gas guide covers 25 are connected through a pin shaft; the side edge of the flue gas guide cover 25 is arranged in a sliding groove of the tower body 31 in a sliding fit manner; a flue gas dust removal card 27 is arranged at the joint between the two flue gas guide hoods 25; an inner limiting shaft lever 23 is arranged inside the outer limiting shaft lever 22, a clamping spring 26 is sleeved on the outer wall of the inner limiting shaft lever 23 between two adjacent smoke guide hoods 25, a sealing plug 29 is arranged at the bottom end of the outer limiting shaft lever 22, and an adjusting ring 28 is arranged on the outer wall of the lower end of the outer limiting shaft lever 22 in a spiral matching mode; the auxiliary pin 24 is arranged at the lower end of the support frame 21 in a sliding fit manner and is connected to the smoke guide cover 25 at the uppermost end of the outer limit shaft lever 22; the outer wall of the smoke guide cover 25 at the lowest end of the outer limiting shaft lever 22 is provided with an air inlet; according to the concentration of the discharged flue gas, the angle between the adjacent flue gas guide covers 25 is further adjusted by operating the adjusting ring 28, so that the time of the flue gas flowing inside the flue gas guide covers 25 is controlled, and when the flue gas flows inside the flue gas guide covers 25, dust particles inside the flue gas guide covers are adsorbed and dedusted by the flue gas dedusting cards 27; the flue device 2 that sets up can adjust the time of flue gas circulation, thereby changes flue gas circulation time through transform flue gas circulation angle, provides sufficient time further to carry out abundant dust suppression to the flue gas and handle.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A flue gas desulfurization and denitration treatment process is characterized in that: the specific flue gas desulfurization and denitration treatment process comprises the following steps:
s1, mounting of the tower base (1): the tower base (1) is manually installed at the outlet of the upper vent hole of the boiler flue gas through bolts, nuts and the like, and the joint is sealed by using a sealing washer, so that the flue gas is prevented from leaking;
s2, flue path adjustment: the length of the flue path is adjusted according to the density of the flue gas, so that the flue gas is completely absorbed and treated, the gas is prevented from leaking, and the discharged gas is further ensured to meet the air discharge standard;
s3, installation of the purification tower (3): installing a purification tower (3) on a tower base (1) in a spiral connection mode, and arranging a sealing gasket at the connection position between the purification tower (3) and the tower base (1);
s4, placing an absorbent: placing a mixture of alkaline liquid (lime, limestone, other alkali liquor waste liquid) and the like in the storage device (4), and placing the storage device (4) at the upper end of the purification tower (3);
s5, flue gas treatment: discharging flue gas in the boiler, and performing desulfurization and denitrification treatment through a purification tower (3); and periodically replacing the absorbent inside the storage device (4);
the flue gas desulfurization and denitration treatment process in the steps of the flue gas desulfurization and denitration treatment process S1-S5 needs to be completed by matching the tower base (1), the flue device (2), the purification tower (3) and the containing device (4); wherein:
the upper end of the tower base (1) is provided with a purification tower (3) through bolts and nuts, a flue device (2) is arranged in an inner cavity of the purification tower (3) in a sliding fit mode, a containing device (4) is arranged in the upper end cavity of the purification tower (3), and a mixing agent such as alkaline liquid (lime, limestone, other alkali liquor waste liquid) is arranged in the containing device (4);
the flue device (2) comprises a support frame (21), an outer limiting shaft lever (22), an inner limiting shaft lever (23), an auxiliary pin (24), a flue gas guide cover (25), a clamping spring (26), a flue gas dust removal card (27), an adjusting ring (28) and a sealing plug (29); the lower end of the supporting frame (21) is provided with an outer limiting shaft rod (22), the inner part of the outer limiting shaft rod (22) is of a cavity structure, the outer wall of the outer limiting shaft rod (22) is provided with symmetrical rectangular through grooves, the outer wall of the outer limiting shaft rod (22) is uniformly provided with smoke guide covers (25) from top to bottom in a sliding fit mode, and the adjacent smoke guide covers (25) are connected through a pin shaft; the side edge of the flue gas guide cover (25) is arranged in a sliding groove of the tower body (31) in a sliding fit manner; a flue gas dust removal card (27) is arranged at the joint between the two flue gas guide covers (25); an inner limiting shaft lever (23) is arranged inside the outer limiting shaft lever (22), a clamping spring (26) is sleeved on the outer wall of the inner limiting shaft lever (23) between two adjacent flue gas guide covers (25), a sealing plug (29) is arranged at the bottom end of the outer limiting shaft lever (22), and an adjusting ring (28) is arranged on the outer wall of the lower end of the outer limiting shaft lever (22) in a spiral matching mode; the auxiliary pin (24) is arranged at the lower end of the support frame (21) in a sliding fit manner and is connected to the smoke guide cover (25) at the uppermost end of the outer limiting shaft lever (22); the outer wall of the smoke guide cover (25) at the lowest end of the outer limiting shaft lever (22) is provided with an air inlet.
2. The flue gas desulfurization and denitrification treatment process according to claim 1, characterized in that: the receiving device (4) comprises a receiving box sleeve (41), an inner clamping ring (42), a lower grid (43), an upper grid (44), a fixing column (45), a fixing spring (46) and a fixing ball ring (47); vent holes are uniformly formed in the bottom end of the containing box sleeve (41), balls are uniformly arranged on the inner wall of the containing box sleeve (41) in a movable connection mode, the inner clamping ring (42) is arranged inside the containing box sleeve (41), and a lower grid net (43) is arranged at the lower end of the inner clamping ring (42); the inner wall of the upper end of the inner clamping ring (42) is provided with an annular sliding groove; the inner wall of the middle part of the inner clamping ring (42) is uniformly provided with a fixed column (45), and the outer wall of the fixed column (45) is sleeved with a fixed spring (46); the outer wall of the fixing column (45) is provided with a fixing ball ring (47) in a sliding fit manner; the upper grid (44) is arranged in the inner clamping ring (42) through a fixed ball ring (47).
3. The flue gas desulfurization and denitrification treatment process according to claim 1, characterized in that: the purification tower (3) comprises a tower body (31), a limiting ring (32), a limiting plug (33), a cover sleeve (34), a support column (35), a rain shield cover (36) and an auxiliary unit (37); the inner wall of the tower body (31) is uniformly provided with sliding grooves, and the lower end of the tower body (31) is provided with a limiting ring (32) through a limiting plug (33); the upper end lateral wall of tower body (31) is provided with the mounting groove, and cover sleeve (34) are installed on the top of tower body (31), cover sleeve (34) be round platform type cavity structure, and the upper end of cover sleeve (34) is provided with circular exhaust hole, the upper end outer wall of cover sleeve (34) evenly is provided with support column (35), and the upper end of support column (35) is provided with rain-proof lid (36), auxiliary unit (37) set up the middle part at tower body (31).
4. The flue gas desulfurization and denitrification treatment process according to claim 1, characterized in that: the auxiliary unit (37) comprises an auxiliary frame (371), an auxiliary shaft (372) and an exhaust fan (373); auxiliary shaft (372) are arranged at the lower end of the auxiliary frame (371), and an exhaust fan (373) is arranged on the auxiliary shaft (372) through a bearing.
5. The flue gas desulfurization and denitrification treatment process according to claim 3, characterized in that: the rain cover (36) is provided with a skirt.
6. The flue gas desulfurization and denitrification treatment process according to claim 4, characterized in that: the fan blades of the exhaust fan (373) are arranged for reverse exhaust.
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| CN111467947A (en) * | 2020-04-15 | 2020-07-31 | 宛兴友 | High temperature industry flue gas emission SOx/NOx control processing system |
| CN111644046A (en) * | 2020-06-15 | 2020-09-11 | 陈伟 | Desulfurization and denitrification absorption tower |
| CN114165801A (en) * | 2021-10-21 | 2022-03-11 | 华能武汉发电有限责任公司 | Corrosion-resistant flue device for tail flue gas treatment |
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|---|---|
| CN110772954B (en) | 2020-10-27 |
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Denomination of invention: A flue gas desulfurization and denitrification treatment process Granted publication date: 20201027 Pledgee: Tongling branch of Bank of China Ltd. Pledgor: Tongling Tongguan Environmental Protection Technology Co.,Ltd. Registration number: Y2024980029702 |
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